Pet fountain



FIG. 1 is a perspective view of a pet fountain incorporating my new design, viewed from the rear, above and from the right side thereof;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a right side elevation view thereof, with the left side being a mirror image of the right side;

FIG. 5 is a rear elevation view thereof; and,

FIG. 6 is a front elevation view thereof.

The dashed lines in FIGS. 1-3 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a pet fountain, as shown and described. 